1. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented Super Computer ?

Answer:

Seymour Cray

4. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

5. Who invented Transformer ?

Answer:

Ottó Bláthy

6. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

7. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951